#664600
Closest named color: Mud Brown (#60460F). oklch(41.9% 0.087 78.9), rgb(102, 70, 0).
Aa
White text reads best on this color (8.60:1).
About this color
#664600 is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.087 and its hue 79°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.013 away. White text reads best on it, at 8.60:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #664600 |
| RGB | rgb(102, 70, 0) |
| HSL | hsl(41, 100%, 20%) |
| OKLCH | oklch(41.9% 0.087 78.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #664600 | 8.60:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #664600 | 2.44:1 | Fails | Lc 14.7 | Not readable |
| #664600 text on white | 8.60:1 | AAA | Lc 89.3 | Fine for body text |
| #664600 text on black | 2.44:1 | Fails | Lc -12.9 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F8F5F0
oklch(97.1% 0.007 80.7)
-
Step 100
100
#EFE9DF
oklch(93.6% 0.015 80.7)
-
Step 200
200
#E3D7C5
oklch(88.4% 0.028 78.2)
-
Step 300
300
#D3BD9C
oklch(80.9% 0.051 77.9)
-
Step 400
400
#BC9B65
oklch(70.7% 0.081 79.2)
-
Step 500
500
#AB8138
oklch(63% 0.104 78.6)
-
Step 600
600
#966A08
oklch(55.6% 0.113 79.3)
-
Step 700
700
#7F5800
oklch(49% 0.102 78.8)
-
Step 800
800 (this color)
#664600
oklch(41.9% 0.087 78.9)
-
Step 900
900
#553D10
oklch(37.8% 0.068 79.2)
-
Step 950
950
#32240C
oklch(27.1% 0.043 78.7)
#664600 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #524700 | 0.037 |
| Deuteranopia (no green cones) | #5A4F03 | 0.032 |
| Tritanopia (no blue cones) | #703D3A | 0.074 |
| Achromatopsia (no color) | #4C4C4C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664600
#664600
oklch(41.9% 0.087 78.9)
- #2E4D7C
#2E4D7C
oklch(42% 0.087 258.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #664600, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.013
- Green Brown #544E03 ΔE 0.038
- Olive Brown #645403 ΔE 0.040
- Milk Chocolate #7F4E1E ΔE 0.059
- Medium Brown #7F5112 ΔE 0.060
- Mud #735C12 ΔE 0.068
- Saddle Brown #8B4513 ΔE 0.075
- Army Green #4B5D16 ΔE 0.075
Use #664600 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.